Posted 11 March 2009 - 03:34 PM
Just a bit of background. The 4g54 roller rockers were fitted to Australian built Magna's between 1992-1994. An average one would have 200,000 miles on the clock. Most heads and valve gear would be from stuffed Magna's. in wrecking yards. Chances are the components will be a little worse for wear.
V6 rockers on the other hand were made from 1994 to 2007. Maybe able to still find new items, but items from wrecks would still have useful life left in them.
Yes, I agree. I walk through salvage yards all over the country and the V6 Caravan's tend to have rockers in very good condition compared to the 2.6L Caravans (slippers). The oiling seems to be better on the V6.
Except one head on a Caravan 2.6L that was recently replaced. Mike C. and I both knew it was a fresh head, so we pulled it for him. Sometimes you run into some really good finds. You just have to go take a walk once a month or so to find them.
'87TSi .510Roller Cam, JE Forged, TS Rings & plateau honed walls, lightened rods, race prepped crank, mains line honed, balanced, 17C, 3"EX, 2"HardPipes, AlFly, rrfpr, 88trans, 3.90's w/posi plate mods, polyBushings, STSprings, KYBStruts, Camber Plates, CustomAlternator
Traded for new set of tires for my wife's Buick: '87 TSI Gold that needs just about all steering and suspension parts replaced, injectors, a new transmission, clutch, and various electrical gremlins. New owner is a mechanic who is already driving it. I couldn't stand letting it sit any more!
'86 ESiR - OEM Roller Cam, Wiseco Forged 8:1 Pistons, Chad's equal length header, TEP T3/T4 turbo, ACT HD clutch, Fidanza Fly, custom 3" exhaust, 3 core oversized radiator, O-ringed block, AJUSA metal shim head gasket, Dawes Device boost controller
'85 Plymouth Conquest Auto , Wiseco 8:1, super light pins, shaved rods, hi-torque cam, 2.5 Exhaust
'84 Dodge Conquest Parts car
'83 Starion - Gutted stock exhaust with '87 TSi muffler, New engine with: BS Elim,forged Wisecos,balanced,Schneider274H,marnal w/oversized stainless valves
'83 Cannonball Run II Jackie Chan car, Basic ring and bearing job w/less than 6K original miles on body, steering, suspension, & rear end, Lightened stock fly, BS Elim, Walbro 255LPH FP, NEW Clearwater head with all new parts, intercooled, 14G turbo, 2750 car weight
'96 Mitsu Mirage w/rebuilt head. Gets 35+MPG.
'87 Dodge Ram50 4WD Rebuilt engine, fresh stock head, Weber carbed, BS elim. Runs great now!
'97 Buick Ultra (supercharged Park Avenue)